.Layout_demo4{
    .logo{
        width: 120px;
        height: 31px;
        background: rgba(255, 255, 255, 0.2);
        margin: 16px 24px;
        float: left;
    }
    // .site-layout-content{
    //     background: #fff;
    //     padding: 24px;
    //     min-height: 280px;
    // }
    // .site-layout-background{
    //     background: #fff;
    // }
    .Sider{
        overflow: auto;
        height: 100vh;
        position: fixed;
        left: 0;
    }
    .site-layout{
        margin-left: 200px;
        .Content{
            margin: 24px 16px 0;
            overflow: initial;
        }
        .site-layout-background{
            padding: 24px;
            text-align: center;
        }
    }
    .site-layout-background{
        padding: 0;
        background: #fff;
    }
    .Footer{
        text-align: center;
    }
}